Every frozen or fresh package of spinach can contain up to 50 aphids, mites, or thrips before the FDA labels it contaminated.
They are liable to the attacks of thrips and red spider, which do great mischief if not promptly destroyed.
thrips are readily controlled by means of nicotine-sulphate.
Of these, mealy-bug, red-spider, thrips and mildew are most troublesome.
thrips, another small insect, is sometimes troublesome but not often and is now easily controlled by applications of nicotine.
Brown and blackish spots on Pears are caused by a species of thrips.
The thrips and slugs on rose bushes can nearly always be kept in check if one can spray or syringe his plants frequently.
According to the species of thrips, the female lays her eggs either in the plant tissues or upon the surface.
No chance of thrips flourishing unsuspected in this house, nor of slugs following their horrid appetite from pot to pot unnoticed.
Aphis and thrips are persistent enemies of this plant, and will need constant attention.